Menu and Category Setup

When I click a category and then the category listing of a product that has 1 listing the product displays to the far left.

When I click the same category through the menu the listing that has one product is centered on the page, which is correct.

How do I make the category listing centered?

You have to change the options of the module or the related module of your menu.

Change the number of columns to 1.

Could you give a link to the page ?

Here is a product with 1 item: www.basketbox.com/nuts/category/listing/29-brazil-nuts

Click nuts then click brazil nuts and you see that it's far left as 3 categories and should be 1.

This should match the menu Brazil Nuts, which is displayed as 1 category.

Can't understand how to do this.

Change the parameters of the associated module of you "Nuts" menu.
Set the number of Columns to 1.

It's fixed. We left the parent nuts category as 3 columns and then changed the sub categories menu from product to category type with 1 column. Then added the parent menu behavior as aliases to the sh404 URL for those sub categories that have 1 column. It would be better to allow us to set a menu ID for sub categories so that it takes its own view and not of the parent.